'ESWNL' (as he is known online) is working on a BVE4 compatible route file, but there are currently no suitable BVE4 trains available for this route so there is no need for it to be rushed at the present time. The 465 and 421 are suitable for the route in BVE2, aswell as the Electrostar that is used by default (despite it being a 377 rather than a 375). Something I've noticed is that the slammers are formed of only driving coaches...